UPDATE: Six hours after making the unannounced change and being surprised by the level of anger from fans who were less than pleased with Cartoon Network’s still unexplained bait-and-switch, the network put out a single tweet:

It is important to note that at no point in the tweet does Cartoon Network apologize for pulling an entire block of programming without notifying viewers on any official webpage (neither Cartoon Network nor DC Nation’s pages have updated over the course of the day to address the issue) or in the airing of the shows themselves (such as a simple voice or text message stating “Green Lantern: The Animated Series won’t be seen today. I hope you like this rerun of a show you never watch instead.”). In fact more than eight-hours after making the unannounced programming change, and after hours of receiving of angry tweets and Facebook comments, neither Cartoon Network nor DC Comics has officially offered any comment on the subject, let alone an attempt at an apology to fans, other than this single tweet.